Author, as stated in the Forum Guidelines, please don't post your entire draft on this forum. Instead, use the Sandbox and then edit your first post (go to 'options', then 'edit') to replace the draft with a link to your sandbox.

I uh… I didn't mean to, but I opened the link and it brought me immediately to the editor for some reason. I just clicked "save" because it wasn't saved yet, and I thoyghr I might have messed something up by intercepting someone's lock or something?

I dunno, that was really weird. Sorry if I accidentally overstepped my boundary, but hey, it's not saved as a draft anymore! So… yay!

EDIT: Oh, it's your link. Your link is faulty and enters people immediately into edit mode. This is the real usable link you want: bleh

Each instance of SCP-3760 is to be kept in a separate, 6cm by 17cm. cylinder tube made of tungsten, left in Store room-06 of Site-██, and require level 3+ research team for testing.

This is a run-on. Try: "Each instance of SCP-3760 is to be kept in a seperate 6cm x 17cm tungsten tube. These tubes are to be kept in Site-██'s store room. Level 3 clearance is required for testing".
Unless it's crucial information, you don't have to provide dimensions. If the tube was 7cm x 18cm, would containment fail?
Why tungsten? If the tubes were made of steel, would it impair containment?

Any SCP personnel bitten by an instance of SCP-3760 are to be taken to doctor ██████ for abnormal memory analysis.

"If any abnormal memories are shown, personnel must undergo class-A amnesiac treatment, and are to be reinstated to their normal role after re-education."

Change "must" to "are to".
An amnesiac is someone with amnesia. The word you're looking for is amnestic.
The second clause isn't a complete sentence, so the comma isn't necessary.

Any class-D bitten are to be terminated if any abnormal memories are shown.

Change "Any class-D bitten" to "Any bitten D-class".
Honestly, is it the end of the world for a few D-class to have weird memories? I don't see any particular reason why the Foundation couldn't keep using them for testing.

Instances of SCP-3760 appear to be Mopane worms varying in external colour, yet have an oral structure similar to that of a sea lamprey.

For general tone purposes, consider changing to "Instances of SCP-3760 resemble Mopane worms (Gonimbrasia Belina) of various external colour. Each instance has an oral structure comparable to that of the sea lamprey (Petromyzon Marinus).

Their external colours do change, however, do not appear to indicate anything measurable by foundation staff.

"foundation" should be capitalized.
For general tone purpose, consider changing to "While the external colouration of SCP-3760 does change, researchers have yet to link this to any external stimulus".

When threatened, instances of SCP-3760 will emit light radiation of up to 1 million candela effectively but temporarily blinding any aggressors, using this blindness to find an opening in the subjects clothing to bite them.

Another run-on. Consider changing to: "When threatened, SCP-3760 instances emit light radiation of up to 1,000,000 candela, temporarily blinding aggressors. They then seek out an opening in the aggressor's clothing and attempt to bite them."

This causes subjects to feel incredibly confused, stating that things around them were different in some cases, most bite victims do not remark on such changes.

This sentence is a bit confusing. I'm not entirely sure what you mean here, so you should probably try to word it a bit more clearly.

All bite victims claim that they felt no pain after being bitten, but will always be slightly docile and will refuse orders to attack instances of SCP-3760.

I'd consider emphasizing the negative in the first part of the sentence: "No bite victims report any pain as a result of being bitten…"

It is unknown what causes this docile state, as no chemical compound is found in the subjects.

I get what you're going for here, but this sentence kind of implies the subjects' bodies are no longer made of chemicals. I'd reword to: "no mood-altering chemical compounds are present in the victims' bloodstream after a bite".

Addendum 3760-1: SCP-3760 was found…

To my knowledge, this should belong in the description. I'm not 100% sure, though, so I'd ask someone with more experience.

Upon further inspection, Mu-35 discovered that these flashes of light are anomalous and decided to contain the SCP.

Don't refer to it as an SCP in the article. It's kind of like calling a computer "a Windows". Instead, refer to it by its full item number (SCP-XXXX) or as "the object", "the entity", etc.
I would reword to: "Mu-35 discovered the anomalous source of the flashes and moved in to contain SCP-3760".

The homeowner who was detained claimed to know about the foundation, stating that the foundation was fictitious.

Again, "foundation" should be capitalized: "Foundation".
I'd consider rewording to: "During interrogation, the homeowner expressed knowledge of the Foundation, stating that it was fictitious".

There should be a comma between "regret" and "but".

It is currently theorised by Dr.███ that bite victims will have their consciousness swapped from a different timeline, along with their memories. This will go to explain SCP-3760-CAS01’s knowledge of the foundation.

This is interesting, but it's only touched on. I'd actually make it a central focus of the article, if I were you.
"theorised" should be spelled: "theorized".

Yes, this SCP is able to blind Hostile personnel. No, I do not believe we should use instances of SCP-3760 as “Living flashbang” as that could cause a containment breach if _ANY_ instance was to be unaccounted for, their breeding patterns could mean that they could possibly asexually reproduce, and we don’t want them to be re-introduced to the [DATA REDACTED] ecosystem.

Is this really necessary? The Foundation doesn't make a business of using scips as weapons, especially when non-anomalous options are easily available and more effective.

Conceptually, this is a bit of a mixed bag for me. Some effects, such as the theoretical timeline swapping, really intrigue me, but you don't really go into detail about it. The flashing light is anomalous, but it's not incredibly unique and doesn't really play into the rest of the effects. The main issue is the lack of a narrative. Series IV scips are expected to have a self-contained story. A few good examples of this are SCP-3008, SCP-3133, and SCP-3281, among others.
Hope I could help and good luck,
Polynom